1882, commercial electric fans first appeared in the United States. This household appliance with only two blades is Huey, the chief technician of Croca Kazis Engine Factory in new york. Skats？ Hoyla invented it. 1883, the factory began mass production of this kind of desktop electric fan. Twenty-five years later, the American Ecker Engine Electric Company developed the world's earliest gear-driven electric fan that shook its head from side to side.
2. The earliest refrigerator
19 13, Chicago, USA successfully developed the world's earliest household refrigerator. This refrigerator named "Duohai Road Asia" has a wooden shell and a compression refrigeration device installed inside.
3. The earliest electric light
1835 On July 25th, Scottish scientist James Bowman Lindsay succeeded in the experiment of continuous light emission with electricity in the laboratory, becoming the first person in the world to actually use electric light. Edison obtained a patent for electric light. 1880, Edison used carbonized paper as filament instead of carbonized kapok filament with short service life. In the same year 10 began mass production, and it was the earliest commercial electric lamp in the world. 1July, 859, Mozes, Naval Training College, Newport, USA? g？ Professor Fama installed his own platinum light bulb in the living room of his home in Salem, Massachusetts, which was the earliest electric light installed in his home.
4.the earliest television
1927 Autumn, Philo, USA? t？ Fantzvas successfully developed television for the first time. He was at 220 Green Street, Los Angeles, and he was sent to Idylly by electronic scanning. Gardner's face successfully reflected a clear picture on the TV screen. His HDTV was released at 1935. 1939, American radio company purchased the patent of Fantzvas.
5. The earliest radio
19 10, the assembled radio was first manufactured by Defest wireless telephone company in new york, USA, and it was first performed and exhibited in the building of Metrau Politan Life Insurance Company. The earliest successful home radio was Westinghouse. 1920 10, Westinghouse's East springer Field Factory estimated that Pittsburgh KDKA Radio would be officially broadcast on 1 1.2 in the same year, so it began to produce this special household radio.
6.the earliest tape recorder
1898, technician of Copenhagen telephone company, Valdemar? Polson obtained a patent, and the recorder was exhibited at the Paris Expo in 1900. This is the earliest tape recorder in the world. But this tape recorder records magnetic piano strings from one spindle to another at a speed of 2. 1 m per second. 1935, the "Magnate Von" recorder made by Berlin Public Electric Company was the earliest tape recorder using plastic tapes in the world. 1947, the "Milla" recorder sold by brush Development Company in Kerry Blond, Ohio, USA is the earliest domestic recorder in the world. This tape recorder uses 30 minutes of recording tape. 7. The earliest vacuum cleaner
190 1 year, British bridge expert Schubert? Cecil? Booth designed the world's earliest vacuum cleaner. However, because there were almost no households using electricity at that time, and the price was expensive, the company's vacuum cleaners were not sold, but the door-to-door service was provided according to the requirements of residents. With the support of the British royal family, vacuum cleaners spread in society. From 65438 to 0905, Chapman-Siena Company in San Francisco began to sell the world's earliest portable household electric vacuum cleaner. This kind of vacuum cleaner weighs 40 kilograms and is put on a trolley.
8. The earliest electric oven
1889, the electric oven installed in Denberner Hotel, samar, Switzerland was the earliest electric oven in the world. Who invented this electric oven is not recorded. 189 1 year, Carpenta Electric Products Factory in St. Pierre, Minnesota, USA commercialized the electric oven and mass-produced it at the earliest time in the world. This electric oven is 46 cm wide, 36 cm high and 30 cm long. The highest temperature in the oven is 120℃.
9. The earliest dishwasher
The earliest commercial automatic dishwasher in the world was made by W? Answer? Mrs. Cochrane, developed for ten years, 1889 patent. Mrs Cochrane invented various types of dishwashers, from home to restaurants. This dishwasher can be washed and dried in just two minutes from initial washing to hot water disinfection.
10, the earliest electric heating device.
An electric heating device patented in the United States. Two years later, Barton Electric Company in Richmond, Virginia, began to mass-produce and sell such household appliances. This electric heater is 69 cm high and 20 cm wide with a voltage of 80 volts. The temperature of the electric heater itself is about 93 degrees. The advertisement says that this heater is most suitable for home use. But when it started to be sold, the trams on the road were used the most.